ZA926548B - Process for making coated abrasives for grinding wheels. - Google Patents
Process for making coated abrasives for grinding wheels.Info
- Publication number
- ZA926548B ZA926548B ZA926548A ZA926548A ZA926548B ZA 926548 B ZA926548 B ZA 926548B ZA 926548 A ZA926548 A ZA 926548A ZA 926548 A ZA926548 A ZA 926548A ZA 926548 B ZA926548 B ZA 926548B
- Authority
- ZA
- South Africa
- Prior art keywords
- making coated
- grinding wheels
- coated abrasives
- coating
- abrasive particles
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/18—Non-metallic particles coated with metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4584—Coating or impregnating of particulate or fibrous ceramic material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
- C04B41/90—Coating or impregnation for obtaining at least two superposed coatings having different compositions at least one coating being a metal
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1436—Composite particles, e.g. coated particles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1436—Composite particles, e.g. coated particles
- C09K3/1445—Composite particles, e.g. coated particles the coating consisting exclusively of metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1635—Composition of the substrate
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1646—Characteristics of the product obtained
- C23C18/165—Multilayered product
- C23C18/1651—Two or more layers only obtained by electroless plating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/54—Contact plating, i.e. electroless electrochemical plating
Abstract
A process for making coated cubic boron nitride abrasive particles for use in abrasive tools having improved retention of the particles comprises applying a primary metal layer chemically bonded to the surface of the abrasive particles and a secondary layer which forms the bulk of the coating, the amount of metal coating being 60-95wt% of the abrasive particles before coating.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US75802391A | 1991-09-12 | 1991-09-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA926548B true ZA926548B (en) | 1993-05-25 |
Family
ID=25050161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA926548A ZA926548B (en) | 1991-09-12 | 1992-08-28 | Process for making coated abrasives for grinding wheels. |
Country Status (11)
Country | Link |
---|---|
US (1) | US5306318A (en) |
EP (1) | EP0532261B1 (en) |
JP (1) | JP3488259B2 (en) |
KR (1) | KR100218606B1 (en) |
AT (1) | ATE127508T1 (en) |
CA (1) | CA2076110A1 (en) |
CZ (1) | CZ280392A3 (en) |
DE (1) | DE69204608T2 (en) |
HU (1) | HUT62831A (en) |
PL (1) | PL295906A1 (en) |
ZA (1) | ZA926548B (en) |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995031057A1 (en) | 1994-05-05 | 1995-11-16 | Sprint Communications Company, L.P. | Method, system and apparatus for telecommunications control |
US6172977B1 (en) * | 1994-05-05 | 2001-01-09 | Sprint Communications Company, L. P. | ATM direct access line system |
US6181703B1 (en) | 1995-09-08 | 2001-01-30 | Sprint Communications Company L. P. | System for managing telecommunications |
US5991301A (en) * | 1994-05-05 | 1999-11-23 | Sprint Communications Co. L.P. | Broadband telecommunications system |
US5926482A (en) | 1994-05-05 | 1999-07-20 | Sprint Communications Co. L.P. | Telecommunications apparatus, system, and method with an enhanced signal transfer point |
US5920562A (en) * | 1996-11-22 | 1999-07-06 | Sprint Communications Co. L.P. | Systems and methods for providing enhanced services for telecommunication call |
CA2155164C (en) * | 1994-08-01 | 2001-07-10 | Satoru Kukino | Super hard composite material for tools |
ES2197300T3 (en) * | 1996-01-26 | 2004-01-01 | General Electric Company | ABRASIVES COVERED FOR ABRASIVE TOOLS. |
WO1997028622A1 (en) * | 1996-02-02 | 1997-08-07 | Sprint Communications Company, L.P. | Atm gateway system |
US5940393A (en) * | 1996-05-28 | 1999-08-17 | Sprint Communications Co. L.P. | Telecommunications system with a connection processing system |
BR9713283A (en) | 1996-11-22 | 1999-10-26 | Sprint Communications Co | System and method for transporting a call on a telecommunications network |
US6115380A (en) * | 1996-11-22 | 2000-09-05 | Sprint Communications Co., L.P. | Broadband telecommunications system |
US6067299A (en) * | 1997-04-16 | 2000-05-23 | Sprint Communications Company, L.P. | Communications system for providing ATM connections and echo cancellation |
US6137800A (en) * | 1997-05-09 | 2000-10-24 | Sprint Communications Company, L. P. | System and method for connecting a call |
US6704327B1 (en) | 1997-05-09 | 2004-03-09 | Sprint Communications Company, L.P. | System and method for connecting a call |
US6178170B1 (en) | 1997-05-13 | 2001-01-23 | Sprint Communications Company, L. P. | System and method for transporting a call |
US6138779A (en) * | 1998-01-16 | 2000-10-31 | Dresser Industries, Inc. | Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter |
US6483837B1 (en) | 1998-02-20 | 2002-11-19 | Sprint Communications Company L.P. | System and method for connecting a call with an interworking system |
US6563918B1 (en) | 1998-02-20 | 2003-05-13 | Sprint Communications Company, LP | Telecommunications system architecture for connecting a call |
US6416560B1 (en) | 1999-09-24 | 2002-07-09 | 3M Innovative Properties Company | Fused abrasive bodies comprising an oxygen scavenger metal |
US6905637B2 (en) * | 2001-01-18 | 2005-06-14 | General Electric Company | Electrically conductive thermoset composition, method for the preparation thereof, and articles derived therefrom |
US7235192B2 (en) * | 1999-12-01 | 2007-06-26 | General Electric Company | Capped poly(arylene ether) composition and method |
US6575353B2 (en) | 2001-02-20 | 2003-06-10 | 3M Innovative Properties Company | Reducing metals as a brazing flux |
US6593391B2 (en) * | 2001-03-27 | 2003-07-15 | General Electric Company | Abrasive-filled thermoset composition and its preparation, and abrasive-filled articles and their preparation |
US6475254B1 (en) | 2001-11-16 | 2002-11-05 | General Electric Company | Functionally graded coatings for abrasive particles and use thereof in vitreous matrix composites |
US20030215588A1 (en) * | 2002-04-09 | 2003-11-20 | Yeager Gary William | Thermoset composition, method, and article |
DE60336074D1 (en) * | 2002-10-11 | 2011-03-31 | Univ Connecticut | MIXTURES OF AMORPHOSIS AND SEMICRISTALLINE POLYMERS WITH FORM MEMORY LIQUIDS |
DE10257554B4 (en) | 2002-12-10 | 2008-04-10 | Treibacher Schleifmittel Gmbh | Abrasive grains coated with an aqueous binder and a complex fine oxide compound, methods for treating such abrasive grains, and their use for resin bonded abrasives |
DE602004027757D1 (en) * | 2003-01-06 | 2010-07-29 | Showa Denko Kk | METAL-CONVINCED CUBIC BORONITRIDE GRINDING GRINDERS AND METHOD FOR THE PRODUCTION THEREOF AND RESIN-RELATED GRINDSTONE |
US7097678B2 (en) | 2003-01-06 | 2006-08-29 | Showa Denko K.K. | Metal-coated cubic boron nitride abrasive grain, production method thereof, and resin bonded grinding wheel |
WO2005078045A1 (en) * | 2004-01-15 | 2005-08-25 | Element Six Limited | Method of coating abrasives |
JP4790630B2 (en) * | 2004-01-15 | 2011-10-12 | エレメント シックス リミテッド | Coated abrasive |
WO2005078040A1 (en) * | 2004-01-15 | 2005-08-25 | Element Six Limited | Coated abrasives |
EP1709138A1 (en) * | 2004-01-15 | 2006-10-11 | Element Six Limited | Coated abrasives |
ES2304684T3 (en) * | 2004-01-15 | 2008-10-16 | Element Six Limited | ABRASIVES WITH COATING. |
WO2008097358A2 (en) * | 2006-09-12 | 2008-08-14 | Jamin Micarelli | Lightweight armor composite, method of making same, and articles containing the same |
CN101679837B (en) * | 2007-05-22 | 2013-10-30 | 六号元素有限公司 | Coated CBN |
WO2009013717A2 (en) * | 2007-07-23 | 2009-01-29 | Element Six Limited | Encapsulated material |
MX2012010763A (en) | 2010-08-06 | 2012-10-15 | Saint Gobain Abrasives Inc | Abrasive tool and a method for finishing complex shapes in workpieces. |
WO2012097037A2 (en) * | 2011-01-11 | 2012-07-19 | Omg Electronic Chemicals, Llc | Electroless plating bath composition and method of plating particulate matter |
US20140090309A1 (en) * | 2012-10-03 | 2014-04-03 | Diamond Innovations, Inc. | Cubic boron nitride particles having a unique morphology |
KR101610266B1 (en) * | 2014-06-17 | 2016-04-08 | 한국과학기술연구원 | a method for preparing boride- and nitride-coated cBN particles and a cBN prepared thereby |
CN106607584B (en) * | 2015-07-28 | 2019-07-05 | 中国科学院宁波材料技术与工程研究所 | A kind of PcBN composite and preparation method thereof |
KR101678200B1 (en) * | 2015-09-02 | 2016-11-21 | 한국과학기술연구원 | Method of manufacturing superhard particles having coating layer formed thereon |
CN107793159A (en) * | 2016-09-05 | 2018-03-13 | 中国科学院宁波材料技术与工程研究所 | A kind of PcBN composite and its preparation method and application |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2746888A (en) * | 1952-07-05 | 1956-05-22 | Du Pont | Method of forming titanium coating on refractory body |
US3556839A (en) * | 1966-11-01 | 1971-01-19 | Ind Distributors 1946 Ltd | Electroless metal coating |
USRE31883E (en) * | 1969-12-16 | 1985-05-14 | General Electric Company | Resinoid grinding wheels containing nickel-coated cubic boron nitride particles |
US3929432A (en) * | 1970-05-29 | 1975-12-30 | De Beers Ind Diamond | Diamond particle having a composite coating of titanium and a metal layer |
US3923476A (en) * | 1973-01-22 | 1975-12-02 | Alexander Rose Roy | Method of producing coated abrasive particles |
IE42084B1 (en) * | 1974-09-18 | 1980-06-04 | De Beers Ind Diamond | Abrasive bodies |
ZA781390B (en) * | 1978-03-09 | 1979-04-25 | De Beers Ind Diamond | The metal coating of abrasive particles |
ZA787071B (en) * | 1978-12-18 | 1980-02-27 | De Beers Ind Diamond | Coated abrasive particles |
JPS6080562A (en) * | 1983-10-07 | 1985-05-08 | Disco Abrasive Sys Ltd | Electrodeposited grinding wheel |
JPS61100352A (en) * | 1984-10-22 | 1986-05-19 | Toyota Banmotsupusu Kk | Grinding wheel |
JPS61168569A (en) * | 1985-01-17 | 1986-07-30 | 昭和電工株式会社 | Manufacture of cubic boron nitride sintered body |
US5062865A (en) * | 1987-12-04 | 1991-11-05 | Norton Company | Chemically bonded superabrasive grit |
US5024680A (en) * | 1988-11-07 | 1991-06-18 | Norton Company | Multiple metal coated superabrasive grit and methods for their manufacture |
US4951427A (en) * | 1989-05-30 | 1990-08-28 | General Electric Company | Refractory metal oxide coated abrasives and grinding wheels made therefrom |
GB9022191D0 (en) * | 1990-10-12 | 1990-11-28 | Suisse Electronique Microtech | Cubic boron nitride(cbn)abrasive tool |
-
1992
- 1992-07-01 HU HU9202196A patent/HUT62831A/en unknown
- 1992-08-13 CA CA002076110A patent/CA2076110A1/en not_active Abandoned
- 1992-08-28 ZA ZA926548A patent/ZA926548B/en unknown
- 1992-09-08 DE DE69204608T patent/DE69204608T2/en not_active Expired - Lifetime
- 1992-09-08 AT AT92308113T patent/ATE127508T1/en active
- 1992-09-08 JP JP23874892A patent/JP3488259B2/en not_active Expired - Lifetime
- 1992-09-08 EP EP92308113A patent/EP0532261B1/en not_active Expired - Lifetime
- 1992-09-09 KR KR1019920016451A patent/KR100218606B1/en not_active IP Right Cessation
- 1992-09-11 CZ CS922803A patent/CZ280392A3/en unknown
- 1992-09-11 PL PL29590692A patent/PL295906A1/en unknown
-
1993
- 1993-03-17 US US08/032,750 patent/US5306318A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP3488259B2 (en) | 2004-01-19 |
DE69204608D1 (en) | 1995-10-12 |
PL295906A1 (en) | 1993-03-22 |
KR930006133A (en) | 1993-04-20 |
KR100218606B1 (en) | 1999-09-01 |
HUT62831A (en) | 1993-06-28 |
EP0532261A1 (en) | 1993-03-17 |
US5306318A (en) | 1994-04-26 |
DE69204608T2 (en) | 1996-04-04 |
EP0532261B1 (en) | 1995-09-06 |
CA2076110A1 (en) | 1993-03-13 |
ATE127508T1 (en) | 1995-09-15 |
CZ280392A3 (en) | 1993-03-17 |
JPH05194939A (en) | 1993-08-03 |
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